Barking drum



Dec. 14,1948. -B. BRANCH I 6,3 5

BARKING DRUM Filed July 27, 1945 INVENT'QR! B QRANCH Patented Dec. 14, 1 948 OFFICE BARKING DRUM Burl Branch; Brantford, Qntario, Canada 7 Application July 27, 1945, Serial No. 607,376 4 Claims. 144-208) This invention relates to barking drums.

In barking drums of this type it has been usual to form a cylindrical body made up of a plurality of rings having inwardly projecting circumferentially spaced apart lugs with longitudinal members extending between the rings and secured thereon between pairs of said lugs. Such a structure and particularly the longitudinal members are subjected to substantial stresses and strains which makes it desirable to provide for substantial rigidity and durability.

It is, therefore, an object of the present invention to provide an improved barking drum embodying longitudinal members of simplified form and designed to impart greater rigidity .to the structure while providing a generally simplified construction.

A further object of the invention is to provide a structure of this kind which requires a minimum of machining.

A still further object of the invention is to provide a structure which may be assembled readily and which will produce a very durable unit.

With these and other objects in view the invention generally comprises a barking drum incorporating a plurality of ring-like elements having inwardly projecting spaced apart circumferential lugs and"lon'gitudinal connecting members which include a friction plate exposed to the interior of the drum and having a centrally disposed longitudinal fin and parallel marginal reinforcing elements extending longitudinally of the members, all of said components of the longitudinal members forming a means of reinforcing or fastening the members to the rings. The invention will be clearly understood by reference to the following detailed specification taken in conjunction with the accompanying drawings.

In the drawings:

Figure 1 is a perspective view partly broken away showing a barking drum and the arrangement of longitudinal elements relatively to rings of the drum.

Figure 2 is an enlarged sectional detail of one form of longitudinal element mounted in position between a pair of spaced apart adjacent lugs of a ring of the drum, and

Figures 3 to 7 are similar views showing alternative constructions of longitudinal elements.

Referring to the drawings, A indicates the barking drum which is formed with external rings Ill having pairs of spaced apart inwardly projecting lugs II. The longitudinal elements according to the present invention are made up of a friction plate l2 including a central web or fin I3 pro- 2 jecting from the outside face thereof at right angles thereto and extending the length of the plate 12. Towards the marginal edges of the friction plate I2, longitudinally extending flange elements I l and I5 are carried by the outer face of the plate in parallel relation to the web or fin I3. These flange elements are preferably welded as at I6 to comprise an integral part of the longitudinal member. The flange elements I I and I5 are spaced apart a distance substantially corresponding to the distance between each pair of lugs II so that the outer face of each flange element will be disposed substantially flush the lugs while the web or fin is welded as at I9 to the inner periphery of each ring III. The

function and may, if desired, be welded to the lugs also. Thus, the longitudinal member when.

mounted provides an extremely durable drum which will withstand any substantial bending stresses to which the longitudinal members might be subjected in operation, as the longitudinal members so constituted provide for a much greater rigidity than heretofore.

The alternative construction shown in Figure 3 is similar to that shown in Figure 1 with the exception that the marginal flanges I l and I5 take the form of channel irons 20. Alternatively, as shown in Figure 4, the flange elements are formed as angle irons 2|. In Figure 5 these are replaced by the I-section elements 22, the elements in each case being welded to the friction plate I2 and may alternatively where required be welded to the lugs II of the ring Ill.

In the case of Figure 6, the flange elements I 1 and I5 take the form of T-section irons, the outer web 23 of which is recessed as at 23a to straddle the lugs II so that the fin or upright of the T irons 243 form a flange which will abut the inner surface of the lugs II of each ring with which the longitudinal member is associated. In the case of Figure 7, a similar structure is shown as in Figure 1, except that a T iron 25 is employed instead of the integral web or fln I3 as in the case of Figure 1. In this case, the T iron is welded as at 25 to the outer face of the friction plate I2.

Longitudinal members of the character described, employed to form a drum, produce a drum of substantially improved characteristics from the points of view that they simplify barking drum construction, require very little machining operations to mount them in operative position and tend to a greater rigidity of drum which is of substantial importance, having regard to the strain and stresses to which such drums are subiected.

What I claim as my invention is:

1. A barking drum including a framework made up of a plurality of spaced apart peripheral rings having radially inwardly extending lugs and a plurality of longitudinally extending members connecting said rings in spaced apart relation, said members designed to be fastened to adjacent pairs of said lugs, and including a friction plate having a continuous fin projecting from the outer surface thereof at right angles thereto and extending the length of the plate, and continuous longitudinal elements secured to said surface, spaced inwardly from the marginal edges of the frictionplate and disposed on each side of and parallel to said fin, said friction plate being designed to overlap the ends of the lugs, said side elements engaging the inside faces of said lugs, said-friction plate being welded-to said lugs, said fin thereof being Welded to'an intervening portion of said rings between the lugs to which said friction plate is attached.

.2. A barking drum including a framework made up of aplurality of spaced apart peripheral rings having radially inwardly extending lugs and a plurality of longitudinally extending members connecting said rings in spaced apart relation, said members designed to be'fastened to adjacent pairs of said lugs, and including a friction plate having a central fin projecting from the outer surface thereof at right angles thereto and extending the length of the plate, and'continuous longitudinal elements secured to said surface, spaced inwardly from the marginal edges of the friction plate and disposed on each side of and parallel to the central fin, said friction plate being designed to overlap the ends of the lugs, said side-elements engaging the inside faces of said lugs, said friction plate being welded to said lugs, said central fin thereof being welded to an intervening portion of said rings between the lugs to which said friction plate is attached.

3. 'A barking drum including a framework made up of a plurality of spaced apart peripheral rings having a plurality of circumferentially spaced apart recesses around their inner circumferences, said recesses being defined by side walls and a base and each recess being aligned with the corresponding recess in others of said rings, a plurality of longitudinally extending'members connecting said rings in spaced apart relation, said members partially fitting within the recesses of the rings and being fastened thereto, said longitudinal members including a friction plate having a fin projecting from the outer surface thereof at right angles thereto and extending the length of the plate, said friction plates engaging said rings laterally of said recesses when partially disposed therein, said fins abutting the bottoms of said recesses, said longitudinal members having two flange elements, said flange elements each being secured to the outer surface of said friction plates adjacent the marginal edges thereof and in parallel spaced apart relation to said fins, said flange elements abutting the side walls of said recesses when said longitudinal members are disposed in said recesses, said friction plates being welded to said rings laterally of said recesses, said fins being welded to the bottoms of said recesses, and said flange elements being welded to the sides of said recesses.

4. A barking drum including a framework made up of a plurality of spaced apart peripheral rings having a plurality of circumferentially spaced apart recesses aroundtheir inner circumferences, said recesses being defined by side walls and a base and each recess being aligned with the corresponding recess mothers of said rings, a plurality of longitudinally extending members conmeeting said rings in spaced apart relation, saidmembers partially fitting within the recesses of the rings and being fastened thereto, said longitudinal members including a friction plate having a fin projecting from the outer surface thereof at right angles thereto and extending the length of the plate, said friction plates engaging said rings laterally of said recesses when partially disposed therein, said fins abutting the bottoms of said recesses, said longitudinal members having two flange elements, said flange elements having an L-section and being secured to the outer surface of said friction plates adjacent the marginal edges thereof and in substantially parallel spaced apart relation to said fin, an outer face of said- L-section abutting the side walls of said recesses.

BURL BRANCH.

REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS Number Name Date 1,207,174 Johnson Dec. 5, 1916 1,457,487 Bartley June 5, 1923 1,672,300 Y Branch June 5, 1928 1,986,530 Read ..1 Jan. 1, 1935 2,208,004 Koebke July 16, 1940 2,300,610 Branch Nov, 3, 1942 

